Android提高之自定义Menu(TabMenu)实现方法

一般使用过UCWEB-Android版的人都应该对其特殊的menu有一定的印象，把menu做成Tab-Menu(支持分页的Menu)，可以容纳比Android传统的menu更丰富的内容(Android的menu超过6项则缩略在[更多]里)，本文参考网上的例子的基础上对例子进行简化以及封装，使其作为一个复合控件融入自己的framework。

先来看看本文程序运行的效果如下图所示：

TabMenu本身就是一个PopupWindow，PopupWindow上面放了两个GridView,第一个GridView就是分页标签，位于PopupWindow的顶部，第二个GridView是菜单，位于PopupWindow的主体。为了实现PopupWindow的弹出/退出的动画效果，本文使用了以下代码：

在工程的res文件夹里添加anim子目录，再新建文件popup_enter.xml：

新建文件popup_exit.xml：

在工程的values文件夹里新建文件popup_animation.xml：

main.xml的源码如下：

TabMenu的封装类TabMenu.java的源码如下：

package com.testTabMenu;
import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.LinearLayout.LayoutParams;
public class TabMenu extends PopupWindow{
 private GridView gvBody, gvTitle;
 private LinearLayout mLayout;
 private MenuTitleAdapter titleAdapter;
 public TabMenu(Context context,OnItemClickListener titleClick,OnItemClickListener bodyClick,
 MenuTitleAdapter titleAdapter,int colorBgTabMenu,int aniTabMenu){
 super(context);
 mLayout = new LinearLayout(context);
 mLayout.setOrientation(LinearLayout.VERTICAL);
 //标题选项栏
 gvTitle = new GridView(context);
 gvTitle.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
 gvTitle.setNumColumns(titleAdapter.getCount());
 gvTitle.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
 gvTitle.setVerticalSpacing(1);
 gvTitle.setHorizontalSpacing(1);
 gvTitle.setGravity(Gravity.CENTER);
 gvTitle.setOnItemClickListener(titleClick);
 gvTitle.setAdapter(titleAdapter);
 gvTitle.setSelector(new ColorDrawable(Color.TRANSPARENT));//选中的时候为透明色
 this.titleAdapter=titleAdapter;
 //子选项栏
 gvBody = new GridView(context);
 gvBody.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
 gvBody.setSelector(new ColorDrawable(Color.TRANSPARENT));//选中的时候为透明色
 gvBody.setNumColumns(4);
 gvBody.setStretchMode(GridView.STRETCH_COLUMN_WIDTH);
 gvBody.setVerticalSpacing(10);
 gvBody.setHorizontalSpacing(10);
 gvBody.setPadding(10, 10, 10, 10);
 gvBody.setGravity(Gravity.CENTER);
 gvBody.setOnItemClickListener(bodyClick);
 mLayout.addView(gvTitle);
 mLayout.addView(gvBody);
 //设置默认项
 this.setContentView(mLayout);
 this.setWidth(LayoutParams.FILL_PARENT);
 this.setHeight(LayoutParams.WRAP_CONTENT);
 this.setBackgroundDrawable(new ColorDrawable(colorBgTabMenu));// 设置TabMenu菜单背景
 this.setAnimationStyle(aniTabMenu);
 this.setFocusable(true);// menu菜单获得焦点 如果没有获得焦点menu菜单中的控件事件无法响应
 }
 public void SetTitleSelect(int index)
 {
 gvTitle.setSelection(index);
 this.titleAdapter.SetFocus(index);
 }
 public void SetBodySelect(int index,int colorSelBody)
 {
 int count=gvBody.getChildCount();
 for(int i=0;i 
 

testTabMenu介绍了数据的定义以及TabMenu的使用，源码如下：

package com.testTabMenu;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;
public class testTabMenu extends Activity {
 TabMenu.MenuBodyAdapter []bodyAdapter=new TabMenu.MenuBodyAdapter[3];
 TabMenu.MenuTitleAdapter titleAdapter;
 TabMenu tabMenu;
 int selTitle=0;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 //设置分页栏的标题
 titleAdapter = new TabMenu.MenuTitleAdapter(this, new String[] { "常用",
  "设置", "工具" }, 16, 0xFF222222,Color.LTGRAY,Color.WHITE);
 //定义每项分页栏的内容
 bodyAdapter[0]=new TabMenu.MenuBodyAdapter(this,new String[] { "常用1", "常用2", }, 
   new int[] { R.drawable.menu_test,
  R.drawable.menu_bookmark},13, 0xFFFFFFFF);
 bodyAdapter[1]=new TabMenu.MenuBodyAdapter(this,new String[] { "设置1", "设置2",
   "设置3"}, new int[] { R.drawable.menu_edit,
   R.drawable.menu_delete, R.drawable.menu_fullscreen},13, 0xFFFFFFFF);
 bodyAdapter[2]=new TabMenu.MenuBodyAdapter(this,new String[] { "工具1", "工具2",
   "工具3", "工具4" }, new int[] { R.drawable.menu_copy,
   R.drawable.menu_cut, R.drawable.menu_normalmode,
   R.drawable.menu_quit },13, 0xFFFFFFFF);
 tabMenu=new TabMenu(this,
   new TitleClickEvent(),
   new BodyClickEvent(),
   titleAdapter,
   0x55123456,//TabMenu的背景颜色
   R.style.PopupAnimation);//出现与消失的动画
  tabMenu.update();
  tabMenu.SetTitleSelect(0);
  tabMenu.SetBodyAdapter(bodyAdapter[0]);
 }
 class TitleClickEvent implements OnItemClickListener{
 @Override
 public void onItemClick(AdapterView arg0, View arg1, int arg2,
  long arg3) {
  selTitle=arg2;
  tabMenu.SetTitleSelect(arg2);
  tabMenu.SetBodyAdapter(bodyAdapter[arg2]);
 }
 }
 class BodyClickEvent implements OnItemClickListener{
 @Override
 public void onItemClick(AdapterView arg0, View arg1, int arg2,
  long arg3) {
  tabMenu.SetBodySelect(arg2,Color.GRAY);
  String str="第"+String.valueOf(selTitle)+"栏/n/r"
  +"第"+String.valueOf(arg2)+"项";
  Toast.makeText(testTabMenu.this, str, 500).show();
 }
 }
 @Override
 /**
 * 创建MENU
 */
 public boolean onCreateOptionsMenu(Menu menu) {
 menu.add("menu");// 必须创建一项
 return super.onCreateOptionsMenu(menu);
 }
 @Override
 /**
 * 拦截MENU
 */
 public boolean onMenuOpened(int featureId, Menu menu) {
 if (tabMenu != null) {
  if (tabMenu.isShowing())
  tabMenu.dismiss();
  else {
  tabMenu.showAtLocation(findViewById(R.id.LinearLayout01),
   Gravity.BOTTOM, 0, 0);
  }
 }
 return false;// 返回为true 则显示系统menu
 }
}

感兴趣的读者可以自己动手测试一下本文所述实例，相信会对大家的Android程序开发有一定帮助。